Dual restrictor shut-off valve

Details Dual restrictor shut-off valve Dual restrictor shut-off valve

2008-07-29

2008-07-29

Rivell, John (Department: 3753)

Valves and valve actuation

With material guide or restrictor

C137S513300, C062S511000, C062S527000

Reexamination Certificate

active

10992974

ABSTRACT:
A shut-off valve for pressurized fluids in an air cooling/heating apparatus having a first duct receiving a first restrictor and a second restrictor. Both restrictors are coaxially formed with a capillary through which the pressurized fluid passes and which causes the rapid expansion of the fluid when the fluid exits from a distal end of the capillary. The outer surface of the restrictors is in direct contact with the interior surface of the first duct. The valve can further include a sampling instrument located between the restrictors.

REFERENCES:
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patent: 5507468 (1996-04-01), Evans
patent: 5893273 (1999-04-01), Casiraghi
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patent: 0 898 132 (1999-02-01), None
patent: 0 921 210 (2002-11-01), None
U.S. Appl. No. 60/524,145, Scott D. Gill et al., Dual Restrictor Shut-Off Valve, filed Nov. 21, 2003.

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